How things work

How do scientists know that a rock is from space and not of earthly origin?

Living Creatures

How does hibernation work for animals? Does a hibernating animal stay in the same position for entirety of the winter?

Science and Technology

Does A Bullet Shot Into The Air Come Down With A Force Strong Enough To Kill?

Human Biology

Why is the liver one of the only organs that grows back when most of it is removed?

World

Why can't governments regulate cryptocurrencies?

How things work

If light slows down passing through water, how does it speed back up when it comes out?

Human Biology

What are the different blood types, and why can't we mix them?

Science and Technology

How does a computer unset a bit (set it from 1 to 0) in memory/storage?

Science and Technology

How do motion detectors detect motion in the dark?

Planet Earth

How do we know what materials the interior of the Earth is made of if the farthest we have dug is 8 miles?

How things work

Why are canned foods high in sodium? Doesn't canning eliminate the need for preservatives?

Science and Technology

How do baggage scanners at the airport work? What do the different colors on the x-ray mean?

How things work

Why is CO2 added to carbonated water/soda and not other gasses? Why not add just air?

Science and Technology

What is the difference between noise isolating and noise cancelling headphones?

Science and Technology

How is it possible for ISP's to know we are doing online? Isn't HTTPS supposed encrypt content so it can't be read?